Journal
AUSTRALASIAN JOURNAL ON AGEING
Volume 30, Issue 2, Pages 89-92Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1741-6612.2010.00448.x
Keywords
fat-free mass; fat mass; mortality; older people; sarcopenia
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Funding
- Fondo Nacional de Desarrollo Cientifico y Tecnologico (FONDECYT) [1090226]
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Aim: To evaluate the association between loss of fat-free mass and mortality among older people. Methods: Information of healthy Chilean older people evaluated by dual energy X-ray absorptiometry was used, identifying those who died in a period of 12 years. A Cox proportional hazards model was used to identify mortality predictors. Life tables were constructed calculating survival using predictive variables. Results: Information from 1413 participants aged 74.3 +/- 5.6 years (1001 women), was obtained. During the follow-up (median 1594 days), 221 participants died. The Cox model identified age and appendicular fat-free mass as predictors of death (hazard ratios 1.08 and 0.85, respectively). According to life tables, participants in the lower sex-specific quartile for appendicular fat-free mass/height had significantly higher mortality. This association was significant among participants aged over 73 years. Conclusion: A low fat-free mass was predictive of mortality in older people.
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